Begin fleshing out a new Event object

synapse/events/__init__.py

@@ -0,0 +1,120 @@
+# -*- coding: utf-8 -*-
+# Copyright 2014 OpenMarket Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from frozendict import frozendict
+
+
+class _EventInternalMetadata(object):
+    def __init__(self, internal_metadata_dict):
+        self.__dict__ = internal_metadata_dict
+
+    def get_dict(self):
+        return dict(self.__dict__)
+
+
+class Event(object):
+    def __init__(self, event_dict, internal_metadata_dict={}):
+        self._signatures = event_dict.get("signatures", {})
+        self._unsigned = event_dict.get("unsigned", {})
+
+        self._original = {
+            k: v
+            for k, v in event_dict.items()
+            if k not in ["signatures", "unsigned"]
+        }
+
+        self._event_dict = frozendict(self._original)
+
+        self.internal_metadata = _EventInternalMetadata(
+            internal_metadata_dict
+        )
+
+    @property
+    def auth_events(self):
+        return self._event_dict["auth_events"]
+
+    @property
+    def content(self):
+        return self._event_dict["content"]
+
+    @property
+    def event_id(self):
+        return self._event_dict["event_id"]
+
+    @property
+    def hashes(self):
+        return self._event_dict["hashes"]
+
+    @property
+    def origin(self):
+        return self._event_dict["origin"]
+
+    @property
+    def prev_events(self):
+        return self._event_dict["prev_events"]
+
+    @property
+    def prev_state(self):
+        return self._event_dict["prev_state"]
+
+    @property
+    def room_id(self):
+        return self._event_dict["room_id"]
+
+    @property
+    def signatures(self):
+        return self._signatures
+
+    @property
+    def state_key(self):
+        return self._event_dict["state_key"]
+
+    @property
+    def type(self):
+        return self._event_dict["type"]
+
+    @property
+    def unsigned(self):
+        return self._unsigned
+
+    @property
+    def user_id(self):
+        return self._event_dict["sender"]
+
+    @property
+    def sender(self):
+        return self._event_dict["sender"]
+
+    def get_dict(self):
+        d = dict(self._original)
+        d.update({
+            "signatures": self._signatures,
+            "unsigned": self._unsigned,
+        })
+
+        return d
+
+    def get_internal_metadata_dict(self):
+        return self.internal_metadata.get_dict()
+
+    def get_pdu_json(self, time_now=None):
+        pdu_json = self.get_dict()
+
+        if time_now is not None and "age_ts" in pdu_json["unsigned"]:
+            age = time_now - pdu_json["unsigned"]["age_ts"]
+            pdu_json.setdefault("unsigned", {})["age"] = int(age)
+            del pdu_json["unsigned"]["age_ts"]
+
+        return pdu_json